Jeremiah p



, @eine gta-tw atetffm.

JEREMIA H Ff JOHNSON', Y OF' NEW YORK, N. Y.

Letters Patent No.' 73,0I4, dated January 7,1868.

IMPROVEMENT IN THB FASININGS OF JAR-COVERS.

TO ALL WHOM -IT MAY CONCERN:

Be it known that I, JEREMIAH F. JOHNs0N','of NewYork, in the county and State of New York, have invented a'certain new and useful Improvement in Fastenings for Covers of Jars and Cans; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing, making a part of this speciiicati'on, and to the letters of reference marked thereon. l I

My said invention relates to the method of fastening -the covers to fruit-jars, and paint and oil-cans,- and other similar articles that require a tight joint, that may be casily'opened land closed without liability to dcrangement, and which also should `be cheaply made. The joint in most of the air-tight jars is made with an India-rubber washer, andin this respect my m'ode of fastening may similarly include the use of an elastic ring or washer. Clamps iitting over the mouth of. the jar, and pressing the cover downwards by means of a screw, or oi' inelines on the neck oi' the jar, have also been used, but the employment of at least an additional piece for manipulation is manifestly objectionable. I Screw-threads for fastening th'e cover have lalso been employed, both on the inside and on the outside of the neck of the jar; but with the former they are so diilioult to make with the required uniformity, that their use is precluded bythe expense of production; and with the latter, although more readily made, they are liable to the objection that the unskilled hands, to which they are often entrusted, cause the threads to be improperly entered, and, ii' made of soft Orsheetme'tal, to'be bent andv injured, so that the cover is soon rendered unfit for use.

To'remedy these objections, my invention consists of two or more short inclines on opposite sides of the neck ofthe jar, with a sheetmetal cover or cap, made with corresponding incl'ines,` that fit together and draw the cap forcibly downward npon the taper neck of the jar and theIndia-rubber washer. As the inclines do not extend continuously around the circle, and are on the opposite sides of the jar in one case, and of the cover in the other, they may be easily blown iu glass for the one, and either spun or swaged er struck up in metal for the other. For the same reason they cannot be misplaced when4 heling put together, and are therefore not liable to injury in careless hands when-'the jar is being either closed or opened.

To enable others skilled in the arts to which it appertains to makeand use my invention, I will proceed to describe its construction and operation with reference to the drawing. i

Figure 1 is a representation of an ordinary frnit-jar, made according to the said invention, and

Figure 2 is a sheetmetal cover for the same.

The iuclincs a and 5 o n the cap fit into the corresponding inclines c and d on the outside of the jar, and a slight turn of one of them causes them to be wedged tightly together, the metal cap being drawn over the small tapercollar e, on the neck of the jar, with which it tightly ts, and upon the India-rubber ringf, which may be placed, if desired, upon theupper edge of the jar, instead of upon the shoulder at the bottom of the neck, as represented. The cap and the neck over which it fits mayboth be made of metal or other material, and manufactured separately for application to paint and -oilcans,`and other similar articles that may require a secure and cheap joint, simple to use, and not lia-blc to injury by carelessor awkward handling.

I am aware that sheet-metal caps with screw-threads that rcqxiire to be spun up by machinery have been vhitherto used, andalso that short inclines have been employed on the neck of the jar in connection with a transverse clamp or yoke to fasten the cover, and I therefore' make no claim to the sheet-metal cap, riorito the inclincs on the neck of the jar, separately. A

I claim as my invention, and desire to secure hy Letters Patent l The use of two or more inclines in recess on the neck of the vessel, in combination with a metal cap or stopper, with corresponding inclinves, substantially as described.

.1ERE-umn F. JOHNSON.

l Witnesses: Jas. E. Jonsson, WM. KEMBLE Hana 

